Calendar dilemma

Gee, I’m really battling to find a suitable MediaWiki calendar extension for the exams section of the module pages.

There are so many calendar extensions, which all work in different ways, and the ones I’ve tried out either display a huge calendar in its own page (and require a special calendar namespace) or have dates that, when clicked, take you to an article, which is not at all what I want.

Here’s what I want: I need a mini calendar widget-like thing, displaying only one month, with the date of an exam highlighted. It must also be easily editable so that a student can fill in the date of the exam for a module, save the page, and be done.